这是我的代码，Timer_create的返回值等于NULL，是不是哪里设置错误？
void main()
{
/*
* use ROV->SysMin to view the characters in the circular buffer
*/
System_printf("enter main()\n");
/*MMUInit(applMmuEntries);
UTILsDetectBoardType();
PinMuxConfig(icev2Mux);
uartInstance=3;
UartOpen(uartInstance,NULL);*/
Error_Block eb;
Timer_Params timerParams;
Error_init(&eb);
Timer_Params_init(&timerParams);
timerParams.period = 2000; /* 2 ms */
//timer0 = Timer_create(Timer_ANY, TimerFxn0, &timerParams, &eb);
timer0 = Timer_create(Timer_ANY, TimerFxn0, &timerParams, &eb);
if(timer0==NULL)
{
System_printf("faili!\n");
System_flush();
}
//hardware_init();
BIOS_start(); /* does not return */
//return(0);
}